The answer is 3456790000. Simply add the numbers together like you would for two plus two. To check your work, a calculator is the best option.
£3456789000
6000.......it's actually 5,100
4100
1000 + 1000 - 1000 + 1000 = 2000
1000+40=1040 1040+1000=2040 2040+30=2070 2070+1000=3070 3070+20=3090 3090+1000=4000 4000+10=4100
13011
5000 + 8250 + 100 + 1000 + 6500 + 1000 + 6500 + 1500 + 1500 + 10000 + 1000 + 10000 + 100 + 8250 + 5000 + 5000 + 8250 = 78,950
1000 1+ (1-2) + 1000 1 - 1 + 1000 1000
1000 plus 10000 equals 11000
= 2000
2,000
1000 + 30 + 74 + 31 = 1135